Hannon Lane, Justin Timberlake, Timothy Mosle. Check almost any lyrics site, e.g., http://www.metrolyrics.com/rehab-lyrics-Rihanna.html
The rehab songs are both by Amy Winehouse and Rihanna. "they're trying to make me go to rehab, but I said no, no, no." -Amy Winehouse, Rehab "I gotta check into rehab, 'cause baby you're my disease." -Rihanna, Rehab Glad I could be of assistance, and I hope that answers your question!
Rihanna doesn't write her own song. She had written one, and it wasn't a hit. She has writers or other musicians write for her, and she just sings.
Rihanna
,Rihanna has a song and video by that name. Incubus has a song by that name. The Hollies had a song called "Bus Stop" that was sometimes referred to as "Under my Umbrella." RIHANNA SANG THE SONG
Noel Coward wrote and performed the song in 1934. His version can be found on You Tube. The lyrics are the same. Amy Winehouse covered the song.